This is silly in the best way possible, that being said I think these changes would help. -2x Grasp of Darkness and -2x Echoing Decay for +4x Victim of Night , put the decays in the sideboard replacing the Cower in Fear . Decay is good in certain matches and a single target removal in others, making Victim better in most situations. I'd also put in +3x Barren Moor s and -3x Swamp s. I'd try and work in another Gray Merchant too since it's just too good not to have 4 of them. 4x Sign in Blood could also help with card draw and using the big life total to your advantage. Unearth ing the rats sounds like just the right amount of wackiness this deck needs, not sure what to cut though. I'd also remove the 2 Dead Weight s for 2 more edicts. Really cool deck idea, I'll have to try this out sometime.

marcello627, thank you for the suggestions! I have found Victim of the night to occasionally not be able to target creatures, so I prefer Grasp of Darkness as it kills a significantly high proportion of threats with significant efficiency, and Echoing Decay is used far more that I had expected to kill two or more targets. Way more than I expected, to be honest. I think both have performed well.

Cower in Fear is absolutely worth the sideboard card spot. That card is GREAT against so many decks.

Another Gray Merchant of Asphodel is fine, but I'll stick with 3. It definitely swings games wildly. I don't know, 3x just seems like a good fit for now.

I like Barren Moor quite a bit, but I think 2x is enough (currently have 1x and have been toying with 2x). There is an element of speed needed for this deck, and tapped lands aren't helpful. Barren Moor is definitely a useful card, so I'll definitely be tinkering with that one.

Sign in Blood is really good; I just haven't needed it and prefer to stick with the removal instead. Personal preference based on play with this so far. That's another card that may make it eventually. At this point, I haven't needed the extra cards. I prefer to keep the creatures and removal higher for now. Still, 2 cards for the casting of a single card is pretty efficient, so it's definitely a card on my radar.

I tried Unearth and found the removal was better to have.

Dead Weight is extremely underrated! That card is amazing for slowing down Gurmag Angler , killing faeries, killing delvers, slowing down other threats, AND it is a permanent (if it didn't kill the target) that helps with devotion. I like Chainer's Edict a lot, but in this case (because of devotion) dead weight synergizes a bit better.

Thanks again for the suggestions!